Car construction.



H. M. PFLAGrBR.

CAR CONSTRUCTION. APPLmATIdN FILED APR-26,1910.

Patented Dec. 20, 1910.

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M. iPPLAGBR.

OAR CONSTRUCTION.

APPLIGATION FILED APR.26.1910.

Patented Dec. 20, 191i) 2 SHEETS-SHEET 2.

"UNITED s'rarrns v PATENT OFFICE."

HARRY M. PFLAGER, OF ST. LOUIS, MISSOURI.

can consrnucrion.

To all whom it may concemr Be it known that I, HARRY M. Prnaoan, a CIU'ZGH of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Car Con-' struction, of which the following is a full, clear, and exact description, such as ,will enableothers skilled in the art to which it appertains to make and use the same, reference being had to the accompanying draw .ings, forming part of this specification, in t W Y a car that will go around sharp curves, over switches and cross-overs, without a swiveling truck thus re'ducing the first cost of bnlldlng the car, the cost of maintenance and the dead weight of the car.

WVith this object in View, my invention consists in supporting the car at each end by pairs of wheels arranged closely together and having narrow wheel bases, said wheels being mounted either in rigid non-swiveling trucks or in guides fastened to part of the under frame.

I am aware that in England the so-called wagons have been mounted upon one pair of wheels at each end, arranged in boxes extending from the under frame at each end of car, but such constructions are identified with cars of light-carrying capac' ity and will not meet the conditions existing in this country, where it is desirable to carry great loads and bulk in the cars, and it is still desirable to further increase the capacity of the cars in the United States.

"in the drawing, 1 indicates the side sills. 2 the cross bearers, 3 the center sills made in any preferableiorm now common in car constructimufi the end sill of the car, 6 the bolster having lateral extensions 7-extcnd- Specification of Letters Patent. t t 2 0,

Application filed Apr1l26, 1910. Serial No. 557,679. Y

made of cast steel and having downwardly openin guideways in which are mounted" journal boxes 9. Above these 'ournal boxes are supporting springs 10', wl'i made in any desired orm.

.'11 are the wheelswhose axles 12 are received in the journal boxes as usual, said Wheels being arranged as. closely to ether as is practicable, soas to shorten up t 9 wheel base or distance from center to center of axle, to the narrowest possible and practical limits. These wheels, as shown in Figs. 1 and 3, are provided with flanges at their inner edges and have their treads coned, they being fixed to the axle in the usual way.- The coning of the treads assists the wheels in taking curves and enables the wheel riding the outer rail to travel a greater distance on a curve and 'so diminishes wear of the wheels, the wheel on the inner curved rail of-course riding on its reduced diameter. In this way the two pairs of wheels at each end of the car will take curves of small ra-' dius without derailment. The narrower the wheel base, the more easily and readily the two pairs ofwheels will be enabled to take small curves. The very narrow wheel base acts as a pivot for the end of the car when v rounding a curve and almost in the same manner as one pair of wheels of large diameter. By the use of my improvement :1 great saving is effected in the omission of parts usually necessary in a swivel truck construction, and a great. saving is made in the cost of construction of he car and a reduction in the weight of the car, and because of the omission of these numerous parts the liability of derangement and necessity of re pairs is reduced to a minimum. Furthermore, in swivellng trucks when the body 18 hard on the side bearlngs derailment of the car in taking short curves is practically a certainty, because of the length of the wheel base, and the inability of the truck to swing on itscenter bearings. In my construction there is no side bearing and the absence of a swiveling motionwill not produce derailment becauseof the narrow wheel base.

' I am aware that minor changes may be de in the construction, arrangement and ich may .be

with respect to the underframe.

being arranged closely together and having narrow Wheel bases, and said Wheels being mounted so as to be horizontally immovable In carconstruction, the combination of an under frame, pairs of pedestal guides having a fixed relation to the ear-body, the

bolster to which said pedestal guides are secured, and pairs of flanged and coned Wheels having narrow Wheel bases.

3. In car construction, the combination of an underfraxne, 'a non-swiveling bolster rigiely-eonneeted to said underframe, two or more pairs of pedestal guides extending from each end of said bolster, journal boxes arranged in said pedestal-guides, and pairs of flanged and coned Wheels mounted in said journal boxes.

4. In car construction, the combination of an underframe, a non-swiveling bolster rigidly connected to said undertrame, two or more pairs of pedestal guides extending from each end of said bolster, journal boxes arranged in said'pedestal-guirlles, pairs of flanged and coned wheels mounted in said journal boxes, and springs arranged above the journal boxes;

In testimony Whereot I have hereunto arfixed my signature in the presence of two witnesses, this 22nd day of April, 1.910.

HARRY M. PFLAGEl-t Witnesses M. P. SMITH, ALINA GEBHART. 

